You don't need a tripod to steady a camera there are several other methods.
o lean against a wall
o use a beanbag on a horizontal surface
o use an easy to carry monopod
o use a 1/4 inch coarse thread eyelet screw in tropod hole and a length of cord under your foot to steady camera
o tuck your elbows into your body and hold your breath
None of these are as effective as a tripod. They are last resorts.